mary snow, cnn, new york. >> we are all asking why after those deaths in newtown. the search for answers. there's one fact that we can't ignore. these kinds of mass shootings happen in the united states more than anything else in the industrialized world. we'll go next to japan. that is where gun violence is almost nonexistent, but first -- ♪ three cheers for the green and white ♪ ♪ the sandy hook school >> these are students from new york ps 22 chorus singing their song to honor the victims there in newtown. their goal, of course, to bring hope and inspiration to families who have been impacted by the shooting. these are fifth graders from staten island. ♪ we'll go ♪ we'll do our best our very best to learn and grow ♪ it's lots of things. all waking up. connecting to the global phenomenon we call the internet of everything. ♪ it's going to be amazing. and exciting. and maybe, most remarkably, not that far away. we're going to wake the world up. and watch, with eyes wide, as it gets to work. cisco. tomorrow starts here. (announcer) when subaru owners